github のユーザやグループのリポジトリリストをダイアログで一覧表示する/フォークは除去してスターの降順で並べる/このコードをユーザページで実行すれば使える/実行方法は直接でも拡張機能でもユーザスクリプトでも

ghrepo.js

async function getUserRepositories(username, force_all) {
	const res = await fetch(`https://api.github.com/users/${username}/repos`)
	if (!res.ok) {
		throw { error: "invalid-username", username }
	}

	const repos = await res.json()

	const link = res.headers.get("link")
	if (link) {
		const [, next_url, last_url] = link.match(/<(.*?)>; rel="next", <(.*?)>; rel="last"/) || []
		const last_page = ~~new URL(last_url).searchParams.get("page")
		if (!force_all && last_page > 10) {
			throw { error: "many-page", last: last_page }
		}

		for (let page = 2; page < last_page; page++) {
			await new Promise(r => setTimeout(r, 200))
			const url = new URL(next_url)
			url.searchParams.set("page", page)
			const page_repos = await (await fetch(url)).json()
			repos.push(...page_repos)
		}
	}

	return repos
}

function show(repos) {
	const div = document.createElement("div")
	const sroot = div.attachShadow({ mode: "open" })
	sroot.innerHTML = `
		<style>
			.bg {
				position: fixed;
				z-index: 999999;
				left: 0;
				top: 0;
				width: 100vw;
				height: 100vh;
				background: #fffb;
				display: flex;
			}
			.content {
				display: flex;
				flex-flow: column;
				width: 60vw;
				height: 60vh;
				margin: auto;
				border: 2px solid #ddd;
				background: white;
				border-radius: 20px;
				padding: 20px;
			}
			.scroller {
				flex: 1 1 auto;
				overflow: auto;
			}
			h1 {
				margin: 0 0 10px;
			}
			td {
				padding: 2px 15px;
			}
		</style>
		<div class="bg">
			<div class="content">
				<h1>Repository List (フォークなし/スター数降順)</h1>
				<div class="scroller">
					<table>
						<thead>
							<tr>
								<th>Rank</th>
								<th>Stars</th>
								<th>name</th>
								<th>Language</th>
								<th>Description</th>
							</tr>
						</thead>
						<tbody>
							${repos
								.map((e, i) => {
									return `
										<tr>
											<td>${i + 1}</td>
											<td>${e.stargazers_count}</td>
											<td><a href="${e.html_url}">${e.full_name}</a></td>
											<td>${e.language}</td>
											<td>${esc(e.description)}</td>
										</tr>
									`
								})
								.join("")}
						</tbody>
					</table>
				</div>
			</div>
		</div>
	`
	sroot.addEventListener("click", eve => eve.target.matches(".bg") && div.remove())
	document.body.append(div)
}

function esc(s) {
	const d = document.createElement("div")
	d.textContent = s
	return d.innerHTML
}

async function main(username, force_all) {
	try {
		const repos = await getUserRepositories(username, force_all)
		const sorted_no_fork_repos = repos.filter(e => !e.fork).sort((a, b) => b.stargazers_count - a.stargazers_count)
		show(sorted_no_fork_repos)
	} catch (err) {
		if (err.error === "invalid-username") {
			alert(`${err.username} がみつかりません`)
		} else if (err.error === "many-page") {
			const will_continue = confirm(`リポジトリ数が多すぎます (${err.last}ページ)\n続行しますか？`)
			if (will_continue) {
				main(username, true)
			}
		} else {
			throw err
		}
	}
}

const paths = location.pathname.split("/")
if (paths.length === 2 && paths[1] !== "") {
	main(paths[1], false)
} else {
	alert("このスクリプトはユーザページでのみ実行できます")
}